Home / 1,267,982.80-1,902,261.21-728,488.15

Finding the Fourth Proportional to 1,267,982.80, 1,902,261.21 and 728,488.15

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Solution

The fourth proportional to 1,267,982.80, 1,902,261.21 and 728,488.15 is: 1,092,897.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267,982.80 : 1,902,261.21 = 728,488.15 : x
  2. Step 2: Convert to fraction form
    1,267,982.80/1,902,261.21 = 728,488.15/x
  3. Step 3: Cross multiply
    1,267,982.80x = 1,902,261.21 × 728,488.15
  4. Step 4: Simplify right side
    1,267,982.80x = 1,385,774,749,689.66
  5. Step 5: Solve for x
    x = 1,385,774,749,689.66/1,267,982.80
  6. Step 6: Final answer
    x = 1,092,897.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.